yang/yang-data-impl/src/main/java/org/opendaylight/yangtools/yang/data/impl/schema/builder/impl/ImmutableLeafSetNodeBuilder.java

   1 /*
   2  * Copyright (c) 2013 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.yangtools.yang.data.impl.schema.builder.impl;
   9
  10 import java.util.Collections;
  11 import java.util.LinkedHashMap;
  12 import java.util.List;
  13 import java.util.Map;
  14
  15 import org.opendaylight.yangtools.concepts.Immutable;
  16 import org.opendaylight.yangtools.yang.common.QName;
  17 import org.opendaylight.yangtools.yang.data.api.InstanceIdentifier;
  18 import org.opendaylight.yangtools.yang.data.api.InstanceIdentifier.NodeIdentifier;
  19 import org.opendaylight.yangtools.yang.data.api.InstanceIdentifier.PathArgument;
  20 import org.opendaylight.yangtools.yang.data.api.schema.LeafSetEntryNode;
  21 import org.opendaylight.yangtools.yang.data.api.schema.LeafSetNode;
  22 import org.opendaylight.yangtools.yang.data.impl.schema.builder.api.ListNodeBuilder;
  23 import org.opendaylight.yangtools.yang.data.impl.schema.builder.api.NormalizedNodeContainerBuilder;
  24 import org.opendaylight.yangtools.yang.data.impl.schema.nodes.AbstractImmutableNormalizedNode;
  25
  26 import com.google.common.base.Optional;
  27 import com.google.common.collect.Iterables;
  28
  29 public class ImmutableLeafSetNodeBuilder<T> implements ListNodeBuilder<T, LeafSetEntryNode<T>> {
  30
  31     private Map<InstanceIdentifier.NodeWithValue, LeafSetEntryNode<T>> value;
  32     private InstanceIdentifier.NodeIdentifier nodeIdentifier;
  33     private boolean dirty;
  34
  35     protected ImmutableLeafSetNodeBuilder() {
  36         value = new LinkedHashMap<>();
  37         dirty = false;
  38     }
  39
  40     protected ImmutableLeafSetNodeBuilder(final ImmutableLeafSetNode<T> node) {
  41         nodeIdentifier = node.getIdentifier();
  42         value = node.getChildren();
  43         dirty = true;
  44     }
  45
  46     public static <T> ListNodeBuilder<T, LeafSetEntryNode<T>> create() {
  47         return new ImmutableLeafSetNodeBuilder<>();
  48     }
  49
  50     public static <T> ListNodeBuilder<T, LeafSetEntryNode<T>> create(final LeafSetNode<T> node) {
  51         if (!(node instanceof ImmutableLeafSetNode<?>)) {
  52             throw new UnsupportedOperationException(String.format("Cannot initialize from class %s", node.getClass()));
  53         }
  54
  55         return new ImmutableLeafSetNodeBuilder<T>((ImmutableLeafSetNode<T>) node);
  56     }
  57
  58     private void checkDirty() {
  59         if (dirty) {
  60             value = new LinkedHashMap<>(value);
  61             dirty = false;
  62         }
  63     }
  64
  65     @Override
  66     public ListNodeBuilder<T, LeafSetEntryNode<T>> withChild(final LeafSetEntryNode<T> child) {
  67         checkDirty();
  68         this.value.put(child.getIdentifier(), child);
  69         return this;
  70     }
  71
  72     @Override
  73     public ListNodeBuilder<T, LeafSetEntryNode<T>> withoutChild(final PathArgument key) {
  74         checkDirty();
  75         this.value.remove(key);
  76         return this;
  77     }
  78
  79     @Override
  80     public LeafSetNode<T> build() {
  81         dirty = true;
  82         return new ImmutableLeafSetNode<>(nodeIdentifier, value);
  83     }
  84
  85     @Override
  86     public ListNodeBuilder<T, LeafSetEntryNode<T>> withNodeIdentifier(
  87             final InstanceIdentifier.NodeIdentifier nodeIdentifier) {
  88         this.nodeIdentifier = nodeIdentifier;
  89         return this;
  90     }
  91
  92     @Override
  93     public ListNodeBuilder<T, LeafSetEntryNode<T>> withValue(final List<LeafSetEntryNode<T>> value) {
  94         checkDirty();
  95         for (final LeafSetEntryNode<T> leafSetEntry : value) {
  96             withChild(leafSetEntry);
  97         }
  98         return this;
  99     }
 100
 101
 102     @Override
 103     public ListNodeBuilder<T, LeafSetEntryNode<T>> withChildValue(final T value, final Map<QName, String> attributes) {
 104         final ImmutableLeafSetEntryNodeBuilder<T> b = ImmutableLeafSetEntryNodeBuilder.create();
 105         b.withNodeIdentifier(new InstanceIdentifier.NodeWithValue(nodeIdentifier.getNodeType(), value));
 106         b.withValue(value);
 107         b.withAttributes(attributes);
 108         return withChild(b.build());
 109     }
 110
 111     @Override
 112     public ListNodeBuilder<T, LeafSetEntryNode<T>> withChildValue(final T value) {
 113         return withChildValue(value, Collections.<QName,String>emptyMap());
 114     }
 115
 116     protected final static class ImmutableLeafSetNode<T> extends
 117             AbstractImmutableNormalizedNode<InstanceIdentifier.NodeIdentifier, Iterable<LeafSetEntryNode<T>>> implements
 118             Immutable, LeafSetNode<T> {
 119
 120         private final Map<InstanceIdentifier.NodeWithValue, LeafSetEntryNode<T>> children;
 121
 122         ImmutableLeafSetNode(final InstanceIdentifier.NodeIdentifier nodeIdentifier,
 123                 final Map<InstanceIdentifier.NodeWithValue, LeafSetEntryNode<T>> children) {
 124             super(nodeIdentifier, Iterables.unmodifiableIterable(children.values()));
 125             this.children = children;
 126         }
 127
 128         @Override
 129         public Optional<LeafSetEntryNode<T>> getChild(final InstanceIdentifier.NodeWithValue child) {
 130             return Optional.fromNullable(children.get(child));
 131         }
 132
 133         @Override
 134         protected int valueHashCode() {
 135             return children.hashCode();
 136         }
 137
 138         private Map<InstanceIdentifier.NodeWithValue, LeafSetEntryNode<T>> getChildren() {
 139             return Collections.unmodifiableMap(children);
 140         }
 141
 142         @Override
 143         protected boolean valueEquals(final AbstractImmutableNormalizedNode<?, ?> other) {
 144             return children.equals(((ImmutableLeafSetNode<?>) other).children);
 145         }
 146     }
 147
 148     @Override
 149     public NormalizedNodeContainerBuilder<NodeIdentifier, PathArgument, LeafSetEntryNode<T>, LeafSetNode<T>> addChild(
 150             final LeafSetEntryNode<T> child) {
 151         return withChild(child);
 152     }
 153
 154     @Override
 155     public NormalizedNodeContainerBuilder<NodeIdentifier, PathArgument, LeafSetEntryNode<T>, LeafSetNode<T>> removeChild(
 156             final PathArgument key) {
 157         return withoutChild(key);
 158     }
 159
 160 }